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Questions tagged [boost-asio]

Boost.Asio is a cross-platform C++ library for network and low-level I/O programming that provides developers with a consistent asynchronous model using a modern C++ approach.

Most programs interact with the outside world in some way, whether it be via a file, a network, a serial cable, or the console. Sometimes, as is the case with networking, individual I/O operations can take a long time to complete. This poses particular challenges to application development. The Boost.Asio library is intended for programmers using C++ for systems programming, where access to operating system functionality such as networking is often required.

More information on Boost.Asio can be found here:

Notable alternatives for Boost.Asio:

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boost::asio read n bytes from socket to streambuf

I have a serialized structure, which is being sent via socket. I need to read it in chunks, since one of its fields contains the size of the data remaining: I need to read first few bytes, find out the length and read the rest. This is what I have…
Amanda Helgström
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Can boost::asio only receive full UDP datagrams?

I am working on a UDP server built with boost::asio and I started from the tutorial customizing to my needs. When I call socket.receive_from(boost::asio::buffer(buf), remote, 0, error); it fills my buffer with data from the packet, but, if my…
Kjir
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Why does Boost.Asio not support an event-based interface?

I am attempting to understand Boost.Asio, with the intention of potentially implementing a signaling system using condition variables in conjunction with Boost.Asio. I have seen the other StackOverflow questions boost asio asynchronously waiting on…
Dan Nissenbaum
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Using boost::asio thread pool for general purpose tasks

In this blog I found a pretty neat example on how to create a simple thread pool using boost::asio. I basically want to use it like this: #include #include #include int main ( int argc, char* argv[] ) { …
Haatschii
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boost:asio thread pool implementation for occasionally synchronized tasks

I have a "main" function that performs many small, independent tasks each once per time step. However, after each time step, I must wait for all of the tasks to complete before stepping forward. I want to make the program multithreaded. I have tried…
John Doe
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How should one tear down a boost::asio::ip::udp::socket?

I have read the boost asio reference, gone through the tutorial and looked at some of the examples. Still, I am unable to see how a socket should be torn down: Should I call close() or is this done by the socket's destructor? When should I call…
Torleif
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boost:asio IPv4 address and UDP comms

Problem Solved - See bottom for solution notes I'm trying to build a simple app to test an ethernet-capable microcontroller. All I want to do is send and receive small UDP packets. The code is using boost::asio for the networking, and is incredibly…
OcularProgrammer
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How to decipher a boost asio ssl error code?

I've got an occasional communications failure in a boost asio ssl implementation, the super helpful error message returned by boost is 'asio.ssl:336458004' I suspect that the numerical figure is some sort of aggregate construct composed of SSL…
Gearoid Murphy
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How to asynchronously read input from command line using boost asio in Windows?

I found this question which asks how to read input asynchronously, but will only work with POSIX stream descriptors, which won't work on Windows. So, I found this tutorial which shows that instead of using a POSIX stream descriptor I can use a…
nickb
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Sending raw data with write() in boost::asio

I've recently decided to use boost::asio for my sockets, but now I'm running into a problem: documentation seems to be lacking. What I want to do is write a function that will send a message consisting of the following structure: 2 bytes of an…
Josh1billion
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Who uses Boost ASIO?

I would like to know how popular is Boost ASIO. Is it being used in any popular network-intensive software ?
Suresh
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Payload split over two TCP packets when using Boost ASIO, when it fits within the MTU

I have a problem with a boost::asio::ip::tcp::iostream. I am trying to send about 20 raw bytes. The problem is that this 20 byte payload is split into two TCP packets with 1 byte, then 19 bytes. Simple problem, why it is happening I have no idea. I…
xconspirisist
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Is boost::io_service::post thread safe?

Is it thread safe to post new handlers from within a handler? I.e. Can threads that called the io_service::run() post new Handlers to the same io_service? Thanks
Johannes Gerer
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Force boost::asio::buffer to copy by value

I use boost::asio::buffer to send a message using void Send(const std::string& messageData) { socket.async_write(boost::asio::buffer(messageData), ...); } And encounter "string iterator not dereferencable" runtime error somewhere within…
Slaus
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using boost sockets, do I need only one io_service?

having several connections in several different threads.. I'm basically doing a base class that uses boost/asio.hpp and the tcp stuff there.. now i was reading this:…
grich
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